<div class="header">
  <div class="main">
    <b class="font_logo">后台管理</b>
    <div class="nav">
     
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    <div class="nav-user">      
      <!-- 登入后的状态 -->
      
      <a class="avatar" href="../user/index.html">
        <img src="http://tp4.sinaimg.cn/1345566427/180/5730976522/0">
        <cite>登陆用户名</cite>
        
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      <div class="nav">
        <a href=""><i class="iconfont icon-tuichu" style="top: 0; font-size: 22px;"></i>退了</a>
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